Biomechanics is the connection between ourselves and something electronic, mechanical or alien. Biomechanical art is typically represented with human or animal anatomy where bones and joints are replaced with metal pistons and gears and infused with muscles and tendons. This kind of tattoo could be representative of a person asking you to take a look at what they have inside.
Biomechanical tattoos are a combination of hyper-realism and three-dimensionality and show the hidden potential of a person, and sometimes their true face. The precursor, which made them popular, is definitely the famous artist Hans Rudolf Giger, who, with his fantastic creatures, appeared in movies about aliens and also kicked off the cyberpunk world. The evolution of biomechanical tattoos was seen with the introduction of tattoos that allow a composition of elements with a more harmonious and natural use of colors. Another evolution is the Steampunk tattoo that relates to a universe of machines that use steam as an element of propulsion.